Question

What is the significance of 5H2O in hydrated copper sulphate salt

Answer 1

Answer:

That 5H2O is called as Water of crystallization, When a amorphous substance is converted into crystal, It absorbs the water in the atmosphere and it gives it the crystal structure, It also helps to provide the colour to the solution.

For Example, Colour of CuSO4.5H2O is blue in colour, but when it is heated, It converts into white

Answer 2

The $\rm 5H_2O$ in hydrated copper sulphate is called the water of crystallization .

Water of crystallization is the fixed amount of water molecules attached chemically to a salt .

The significance of water of crystallization in a salt is:

• It crystallises the salt . Without water of crystallization , the salt would not be present in its crystalline form and would be called anhydrous amorphous salt .

• It determines the shape of the crystals of a salt .

• It also imparts the colour to the salt . For example - in hydrated copper sulphate , water of crystallization gives it a blue colour , hence it is commonly known as blue vitriol .